Locked House Escape Game

Well... Your sister failed to hold her mouth and told your parents about your little night out last week. As a result, you got grounded. Not that you were surprised she couldn't have kept a secret. Anyway, you had already set up a date for tonight, you can't postpone it with such an embarrassing excuse. The only acceptable way is to sneak out while your parents are away. The good thing is that your sister's not at home either. This is the time, let's find the spare keys, I'm sure they hid it really well, but you'll manage it. Good luck!